CVE-2026-91408: Critical severity Oracle Oracle Identity Manager vulnerability

Published Oct 20, 2026

Updated

Vulnerability in the Oracle Identity Manager product of Oracle Fusion Middleware (component: End User Self Service). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle Identity Manager. Successful attacks of this vulnerability can result in takeover of Oracle Identity Manager. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected Software

3 affected components

Oracle Oracle Identity Manager=12.2.1.4.0, =14.1.2.1.0

Oracle Identity Manager=12.2.1.4.0

Oracle Identity Manager=14.1.2.1.0

Event History

Oct 20, 2026

CVE Published

via MITRE·09:25 PM

Data Sourced

via MITRE·09:25 PM

DescriptionSeverity

Data Sourced

via NVD·10:20 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

Which Oracle Identity Manager versions are affected?

The affected supported versions are 12.2.1.4.0 and 14.1.2.1.0.

Does exploiting this issue require credentials or user interaction?

No. The vulnerability is described as easily exploitable by an unauthenticated attacker and requires no user interaction.

What network access does an attacker need?

An attacker needs network access to the Oracle Identity Manager service through T3 or IIOP.

What could a successful attack achieve?

A successful attack can result in takeover of Oracle Identity Manager, with high impact to confidentiality, integrity, and availability.